Question

the mean serum cholestrol level for US adults was 202, with a standard deviation of 41.6...

the mean serum cholestrol level for US adults was 202, with a standard deviation of 41.6 (the units are milligrams per deciliter). A simple random sample of 112 adults is chosen.

What is the probability taht the sample mean cholesterol level is greater than 212?

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

.Solution :

= / n = 41.6 / 112

The probability that the sample mean cholesterol level is greater than 212 is,

P( > 212) = 1 - P( < 212)

= 1 - P[( - ) / < (212 - 202) / ] 41.6 / 112

= 1 - P(z < 5.544)

= 0.0055

Probability = 0.0055

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The National Health and Nutrition Examination Survey reported that in a recent year, the mean serum...
The National Health and Nutrition Examination Survey reported that in a recent year, the mean serum cholesterol level for U.S. adults was 210, with a standard deviation of 41 (the units are milligrams per deciliter). A simple random sample of 64 adults is chosen. What is the probability that the sample mean cholesterol level is greater than 205?
Watch your cholesterol: The National Health and Nutrition Examination Survey (NHANES) reported that in a recent...
Watch your cholesterol: The National Health and Nutrition Examination Survey (NHANES) reported that in a recent year, the mean serum cholesterol level for U.S. adults was 202, with a standard deviation of 41 (the units are milligrams per deciliter). A simple random sample of 110 adults is chosen. a. What is the probability that the sample mean cholesterol level is greater than 210? b. What is the probability that the sample mean cholesterol level is between than 190 and 200?...
The mean triglyceride level for U.S. adults (ages 20 and older) is 97 milligrams per deciliter....
The mean triglyceride level for U.S. adults (ages 20 and older) is 97 milligrams per deciliter. Assume the triglyceride levels of U.S. adults who are at least 20 years old are normally distributed, with a standard deviation of 25 milligrams per deciliter. You randomly select a U.S. adult who is at least 20 years old. What is the probability that the person triglyceride level is less than 100? (Levels under 150 milligrams per deciliter are considered normal). In a randomly...
The serum cholesterol level of U.S. females 20 years old or older is normally distributed with...
The serum cholesterol level of U.S. females 20 years old or older is normally distributed with a mean of 220mg.dL (milligrams per deciliter) and a standard deviation of 44 mg/dL. Let X represent serum total cholesterol level for U.S. females 20 years old or older. One outcome of interest is the probability that a woman has a serum cholesterol level greater than 266mg/dL. If 550 U.S. women 20 yrs old or older are randomly selected, how many of them would...
5. It is reported that the cholesterol level for U. S. women ages between 50 and...
5. It is reported that the cholesterol level for U. S. women ages between 50 and 59 yields a mean milligrams per deciliter and a standard deviation milligrams 2288.43per deciliter. (Assume the distribution is Normally Distributed) a) What percentage of women has a total cholesterol level less than 239 milligrams per deciliter of blood? b) If 200 U. S. women in the 50-59 age group were randomly selected, about how many would you expect to have a total cholesterol level...
Much discussion has appeared in the medical literature in recent years on the role of diet...
Much discussion has appeared in the medical literature in recent years on the role of diet in the development of heart disease. The serum-cholesterol levels of a random sample of n = 24 people who eat a primarily macrobiotic diet were measured. Their average cholesterol level was found to be ¯x = 195 milligrams per deciliter with standard deviation of s = 35 milligrams per deciliter. The cholesterol levels in the general population in this age group have mean of...
The total cholesterol levels of a sample of men aged​ 35-44 are normally distributed with a...
The total cholesterol levels of a sample of men aged​ 35-44 are normally distributed with a mean of 222 milligrams per deciliter and a standard deviation of 38.1 milligrams per deciliter. (a) The percent of the men that have a total cholesterol level less than 228 milligrams per deciliter of blood is what ​%. ​(Round to two decimal places as​ needed. (b) of the 245 men selected____would be expected to have a total cholesterol level greater than 252 milligrams per...
The total cholesterol levels of a sample of men aged​ 35-44 are normally distributed with a...
The total cholesterol levels of a sample of men aged​ 35-44 are normally distributed with a mean of 200 milligrams per deciliter and a standard deviation of 38.8 milligrams per deciliter. ​(a) What percent of the men have a total cholesterol level less than 236 milligrams per deciliter of​ blood? ​(b) If 247 men in the​ 35-44 age group are randomly​ selected, about how many would you expect to have a total cholesterol level greater than 255 milligrams per deciliter...
The serum zinc level (in micrograms per deciliter) for males between ages 15 and 17 has...
The serum zinc level (in micrograms per deciliter) for males between ages 15 and 17 has normal distribution with mean 90 and standard deviation 14. If the serum zinc level exceeds 87, what is the probability that it is below 114? Find ? such that 2/3 of males ages 15 and 17 have serum zinc level greater than ?.
The total cholesterol levels of a sample of men aged​ 35-44 are normally distributed with a...
The total cholesterol levels of a sample of men aged​ 35-44 are normally distributed with a mean of 215 milligrams per deciliter and a standard deviation of 38.8 milligrams per deciliter (a) What percent of the men have a total cholesterol level less than 225 milligrams per deciliter of​ blood? ​(b) If 241 men in the​ 35-44 age group are randomly​ selected, about how many would you expect to have a total cholesterol level greater than 257 milligrams per deciliter...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT